Add Sufiishq facebook group link on top popup menu

IMPORTANT: All PRs must be linked to an issue (except for extremely trivial and straightforward changes).

Fixes #37

Description Added sufi-ishq facebook group menu item in top-right app-bar

Type Feature

Screenshots (if applicable)

Checklist

[x] I have read the Contributing page.
[x] I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach.
[x] I have written Unit tests for any new feature(s) and edge cases for bug fixes.
[x] I have added any strings visible on UI components to the strings.xml file.
[x] I have updated the CHANGELOG.md file for any notable changes to the codebase.
[x] I have built and run the demo app(s) to verify my change fixes the issue and/or does not break the demo app(s).

sufiishq / sufiishq-mobile